I currently have w8.1 installed and want to reset it, just because I feel like i've installed too much and i don't want to go through the trouble of reinstalling everything. I only want to keep a few programs as I hardly use the others anymore. I was planning on setting up a partition and installing all my steam games there, then reformatting. I would be using the windows 8 formatting thing in the system settings. Does this only affect C: or would it clear my other partition as well?